Continuation of 'structural characterisation of spread polyelectrolyte/surfactant films: new insight into tuneable reservoir formation'
Our recent discovery of how to control the formation of extended structures in spread polyelectrolyte/surfactant (P/S) films at the air/water interface marked an exciting advance. It was achieved by tuning the charge of aggregates used in film preparation, which nucleate reservoirs of material upon surface area compression. Even so, the nature of the extended structures (loops, attached vesicles, multilayers) and the aggregate properties required for their nucleation (charge, hydration, size) remain unresolved. We performed a FIGARO experiment in August 2020 on the poly-l-lysine/sodium dodecyl sulfate system. Interestingly, reservoirs were shown to be nucleated by aggregates of different charge, with patches of surfactant bilayer or hemimicelles adhered to the primary P/S structure. Additional time of 2 days is required to record missing data as well as complete a short extension to provide optimal insight into the nature and underlying reasons for extended structure formation. This work will result in a high quality standalone publication and represents a key step towards finally resolving why extended structures form in certain P/S mixtures of broad interest to materials science.
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Richard A. Campbell; Javier Carrascosa-Tejedor; M Jayne Lawrence and Armando Maestro. (2021). Continuation of 'structural characterisation of spread polyelectrolyte/surfactant films: new insight into tuneable reservoir formation'. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-631
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